Icom IC-E90 Service Manual page 7

• AF UNIT
Top view
• RF UNIT
Top view
• AF UNIT • AF UNIT
Bottom view Bottom view
AF mute
(Q251: 2SJ364)
AF power amplifier
(IC252: TA7368F)
AM detector
(Q201, Q202: XP6501)
FM IF IC
(IC151: TA31136FN)
IF amplifier
(Q102: 2SC4403)
Crystal oscillator
(X1: VR-583, 13.800 MHz)
T5V regulator
(Q11: XP1501, Q55: 2SB1132)
• RF UNIT
Bottom view
Drive amplifier
(Q52: 2SK3475)
Pre-drive
(Q54: 2SC5289)
Power amplifier
(Q51: 2SK3476)
VCO circuit
1st mixer
(IC351: µPC2757TB)
T3 regulator
(Q56: XP4315, D50: MA6S121)
144 MHz TX high-pass filter circuit
50 MHz TX low-pass filter circuit
2 - 2
1st AF amplifier
(Q205: 2SD2216)
R3V regulator
Q208: 2SA1576
Q209: XP1501
AM/FM switch
(Q206: XP4315)
629.995–999.90 MHz RF amplifier
(Q452: 2SK3475)
75.995–229.995 MHz
RF amplifier
(Q351: 3SK320)
R3 regulator
(Q353: XP4312)
0.495–29.995 MHz RF amplifier
(Q302: 2SC5006)
29.995–75.995 MHz
RF amplifier (Q303: 2SC5006)